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jsf80238
Asked: 2015-01-07 14:25:52 +0800 CST

SSH 后别名未知

  • 772
$ grep alias ~/.bashrc
# User specific aliases and functions
. ~/.alias

$ grep mydiff ~/.alias
alias mydiff='diff --ignore-space-change --ignore-blank-lines --side-by-side --suppress-common-lines'

$ alias mydiff
alias mydiff='diff --ignore-space-change --ignore-blank-lines --side-by-side --suppress-common-lines'

$ ssh -q localhost 'alias mydiff'
alias mydiff='diff --ignore-space-change --ignore-blank-lines --side-by-side --suppress-common-lines'

$ ssh -q localhost 'mydiff'
bash: mydiff: command not found

为什么不能通过 SSH 使用“mydiff”？谢谢

ssh

1 个回答

  1. Best Answer

    来自man bash(1)：

       Aliases  are not expanded when the shell is not interactive, unless the
   expand_aliases shell option is set using shopt (see the description  of
   shopt under SHELL BUILTIN COMMANDS below).

    将以下行添加到您的.bashrc文件中：

    shopt -s expand_aliases

    或者：

    [alexus@wcmisdlin02 ~]$ ssh 0 'bash -c ll | head -1'
bash: ll: command not found
[alexus@wcmisdlin02 ~]$ ssh 0 'bash -ci ll | head -1'
bash: no job control in this shell
total 8612
[alexus@wcmisdlin02 ~]$
    • 2

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